Multiple mold



Oct. 9, 1928. 1,687,010

. $.FLAM

MULT I PLE MOLD Filed Jan- 1926 2 SheetsSheet 1 INV E N TO R .5fephen F701 Hi5 ATTORNEY Oct. 9, 1928. 1,687,010

S. FLAM MULTIPLE MOLD Filed Jan. 1926 2 Sheets-Sheet 2 INVENTOR HIS ATTORNEY Patented Oct. 9, 1928.

UNITED STAT-ES PATENT OFFICE. I

STEPHEN FLAM, OF WALNUT'PARK, CALIFORNIA,;ASSIGNOR TO"SUPERTII|EMACHIN-" ERY CORPORATION, OF LOS ANGELES, CALIFORNIA, A CORPORATION or 101m:-

FORNIA.

Application filed January This invention relates to the art of molding plastic material such as concrete, cement, or the like, and more particularly it relates to the manufacture of artificial stone products adapted for building material, pipes, conduits, or the like.

In a prior application filed Feb. 19, 1925, in my name, entitled Process and apparatus for molding and having Serial Number 10,265, I describe a system whereby cored articles, such as building blocks, can be expeditiously molded by the .aid of multiple molds; These molds are shown as having a series of apertures in the bottom platethere of, through which cores are projected. In accordance with that system, a nest of cores is carried by a vertically movable plat-form with the axes of the cores vertical; and the multiple mold nests over thelcores and likewise rests upon the vertically movable structure. After filling the molds, the vertically movable structure is lowered so as to deposit the mold in a curing space, while simultaneously, the cores are also withdrawniby this vertical movement. All this is describedand claimed in the prior application.-

In orderto vary the size of the material or product that is cast, it is merely necessary to changethe nest of coresand its cooperating molds. In some instances, however, it'is desirableto retain the size of the product and alter the size of the cores. Such a condition sometimes ariseswhen certain building ordinances must be met'by the product or block,

' as regards thickness of web. fOf course this could be taken care Of by utilizing a different mold for each different size of web or thickness of material desired; yet with the aid of my invention, it is possible to adjust the size of the apertures in the mold in an extremely simple manner, and with the aid of relatively inexpensive parts. It is accord ingly one of the Objects of my invention to make it possible to adjust expeditiously the size of the aperture corresponding to the cored holes in the finished product.

Another object of my invention is to provide an inexpensive mold structure adjustable so thati't can be used for producing a large variety of cored blocks or tiles, and in connection with varying sizes of cores.

My invention possessesmanyother advantages, and has other objects which may be made more easily apparent from a consid- I MULTIPLE MOLD.

4, 1926. Serial No. 79,158 g eration of one embodiment of my invention.

For this purpose I have shown a forn in the drawings accompanying and forming part of the present speolficatio'n.

which illustrates the general principles of my invention; butjit is to be understoo'dthat.

cores and the multiple mold are supported.

The platform uponwhich the mold .pallets and cores are supported is illustrated mainly in a diagrammatic fashion, since it maybe substantially identical in structure and use with that disclosed in my. earlier application. There are two angle iron supports 11 (Fig. 3), fastened toa moving chain mechanism, which is illustrated partially at 12, near the top of Fig. 3. The structural I i 'I shall now proceed to describe this form in detail,

iron elements 13, forming a general support for all of the part-s, are componentsofa movable. truck"structure, whereby the molds may be transported to a filling station and I later to a curing space, where the supports '11. can be lowered so as to depos t the mold and simultaneously to withdraw the cores. ,However,my present invention. is not necessarily limited to such amovable system for its advantages are not destroyed when'used with other mold systems.

Supported on the angles ll are a plurality of cores 14. These cores have ears 15 by the aid of which they may be fastened to a series of longitudinally extendingangles 16, formcatch mechanism 18 serves to hold the nest of cores thus formed, securely in place. All thisrmechanism, as thus far described, has

been set forth in detail in my prior application, and since the present invention is not in any manner dependent upon the details of the core structure, further description of this part of the mechanism is unnecessary.

Nesting over the cores 1 1 there is a multiple pallet 19, shown in greater detail in Figs. 1 and .2. In the presentinstance, twelve separate and distinct mold spaces 20 are shown in ries ofapertures 25 which agree in spacing with that of cores 1st,.but which, in size, correspond to the largest size of cores that are to be used in connection with the mold 19. When so used in connection with the largest size of cores, the plate 21 forms the bottom surface of the mold compartments 20. The manner in which the sides of these compartments are formed will now be described.

The plate 21 as shown, is of suificient width to form a pair of rows of mold spaces 20. In order to provide the partition Wall between these rows, I provide a pair of sheet metal strips 26, extending longitudinally of the plate 21, and spacedapart by the bars 27, forming a rigid part of the structure. The

separating plates 28 have projections or ears 29, which extend into the space formed between the two plates 26, through slots formed in said plates. Locking wires 30 serve to anchor these separating plates permanently in place, but the projections 29 have suiticient clearance in the slots to permit the plates 28 to be moved'slightly sidew-ise, so as to free them from the finished produce when unloading the mold.

e The free ends of plates 28 are likewise provided with projections or ears 31 (Fig. 2) which are arranged to be accommodated in appropriate slots in the two side. plates 32.

These side plates form the remaining walls of the mold, and are hinged at their bottom edges to the outer angles 22, as by the aid of the butt hinges 33. stiffener bars 3 1 can if desired be used.

In order to hold the sides 32 in position {or pouring, I provide a pair of hooks 35 at each end of the mold, which are anchored in the transverse rod 24, and which engage pins 36 supported between bars 34. To open the mold, it is merely necessary to detach hooks 35 and to permit plates 32 to drop down, and

the mold can then be easily emptied.

When the product to be cast is to have the largest size cored holes in it, the bottom plate 21 is utilized to provide the bottom of the mold spaces 20, and a nest ofthe large cores is accordingly used on the structure 11. Now in case the thickness of theweb in the product is to be increased without varying the external dimensions of the product, smaller cores,

7 such as 14, must be used. To provide a bottom plate 37 for the molds having smalier apertures 38, all that is necessary to do is to'slip the plate 37 underneath the separating plates 28, and directly over the plate 21. A pair of such plates is used for each mold, each plate 7 corresponding to one row of molds; the width being ust sufficient, as shown in Fig. 3, to be accommodated between plate 26 and plate 32. The weight of the plates 28 is sufficient o'rdinarilyto keep the plate 37 in place if not, it

"is a simple matter to providea detachable fastening. Since plate 37 is thin, there is'suificient clearance between the projections 31,

and their slots to permit this insertion.

Several sets of such plates as 37 can be;;turnished,,each having its distinctive core open. ing 38, whereby any smaller size of core than the maximum size can be used in the same mold. In this way, an adjustablev mold is obtained. The change in size can be speedily plates, for permitting any desired smaller size of core to be used than that corresponding to the aperture in the said bottom plate.

2. In a multiple mold structure, an apertured plate forming the bottom-of a mold, a,

central partition for forming a pair of rows of moldspaces, a series of separating plates, each loosely anchored at one edge in said partition, some extending on one side ofthe partition. and some on the other. a pair of removable side plates paralleling the partition and completin the sides of the mold. and a pair of detachable plates corresponding to'each row of the mold spaces and resting on the bottom plate and below theloosely anchored plates, said detachable plates having apertures corresponding in spacing to the apertures in the bottom plate. but oi smaller size.

. In testimony whereof I have hereunto set my hand,

' STEPHEN FLAM. 

